Pub Date : 2000-05-23DOI: 10.1109/LFNM.2000.854039
P. Ivanov, I.A. Sukkoivanov, V. Lysak, A.V. Kublik
We present results of a thermodynamic model application for the investigation of the oxide-confinement vertical-cavity laser. By including carrier diffusion and thermal propagation equations in the laser dynamics, one can take into account a nonuniform electron transport and heating in the non-symmetrical laser structure. The observed model is useful in analysis of laser dynamics and to further parameter optimization of the vertical-cavity laser structure.
{"title":"Thermal properties of semiconductor oxide-confinement vertical-cavity lasers","authors":"P. Ivanov, I.A. Sukkoivanov, V. Lysak, A.V. Kublik","doi":"10.1109/LFNM.2000.854039","DOIUrl":"https://doi.org/10.1109/LFNM.2000.854039","url":null,"abstract":"We present results of a thermodynamic model application for the investigation of the oxide-confinement vertical-cavity laser. By including carrier diffusion and thermal propagation equations in the laser dynamics, one can take into account a nonuniform electron transport and heating in the non-symmetrical laser structure. The observed model is useful in analysis of laser dynamics and to further parameter optimization of the vertical-cavity laser structure.","PeriodicalId":265943,"journal":{"name":"Proceedings of LFNM'2000. 2nd International Workshop on Laser and Fiber-Optical Networks Modeling (Cat. No.00EX419)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114779601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-05-23DOI: 10.1109/LFNM.2000.854036
A. Bulgakov, V. Kononenko, O.V. Shramkova
The materials with a periodical symmetry (superlattices, layered-periodical structures) are applied in different areas of science. For example, in X-ray techniques they are used as reflectors, in optical and infrared ranges the periodical layered coats are applied for a coated lens etc. The properties of such mediums depend on the physical properties of the materials, from which they are formed and on geometrical sizes of the layers and on the structure period. The electrodynamical properties of the materials formed by the periodical iteration of the layers of a dielectric and substance, the dielectric permeability of which depends on frequency and can be negative, are investigated in the paper. Such a substance is the semiconductor for infrared or optical ranges, gas-discharge plasma for a centimetre wave frequency. We shall show that the specific allowed bands exist in semiconducting lattices that are connected with the plasma properties of the lattice layers.
{"title":"Spectral properties of optical mediums with transmitting symmetry containing plasma-like layers","authors":"A. Bulgakov, V. Kononenko, O.V. Shramkova","doi":"10.1109/LFNM.2000.854036","DOIUrl":"https://doi.org/10.1109/LFNM.2000.854036","url":null,"abstract":"The materials with a periodical symmetry (superlattices, layered-periodical structures) are applied in different areas of science. For example, in X-ray techniques they are used as reflectors, in optical and infrared ranges the periodical layered coats are applied for a coated lens etc. The properties of such mediums depend on the physical properties of the materials, from which they are formed and on geometrical sizes of the layers and on the structure period. The electrodynamical properties of the materials formed by the periodical iteration of the layers of a dielectric and substance, the dielectric permeability of which depends on frequency and can be negative, are investigated in the paper. Such a substance is the semiconductor for infrared or optical ranges, gas-discharge plasma for a centimetre wave frequency. We shall show that the specific allowed bands exist in semiconducting lattices that are connected with the plasma properties of the lattice layers.","PeriodicalId":265943,"journal":{"name":"Proceedings of LFNM'2000. 2nd International Workshop on Laser and Fiber-Optical Networks Modeling (Cat. No.00EX419)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126447188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-05-23DOI: 10.1109/LFNM.2000.854043
T. Gerasimchuk, V. Katok, A. Manko
The results of the numerical account of an electromagnetic wave field in a ring optical resonator coupled to an optical waveguide in which the pumping signal is distributed are submitted in this work. The dependencies of amplitude of wave field in the ring resonator from factor of division and frequency at different values of losses in the resonator are represented. The opportunity of forming of solitons in the ring resonator in an environ of resonance frequencies at a power level of pumping signal much below threshold one is marked.
{"title":"Forming of solitons using ring optical resonator","authors":"T. Gerasimchuk, V. Katok, A. Manko","doi":"10.1109/LFNM.2000.854043","DOIUrl":"https://doi.org/10.1109/LFNM.2000.854043","url":null,"abstract":"The results of the numerical account of an electromagnetic wave field in a ring optical resonator coupled to an optical waveguide in which the pumping signal is distributed are submitted in this work. The dependencies of amplitude of wave field in the ring resonator from factor of division and frequency at different values of losses in the resonator are represented. The opportunity of forming of solitons in the ring resonator in an environ of resonance frequencies at a power level of pumping signal much below threshold one is marked.","PeriodicalId":265943,"journal":{"name":"Proceedings of LFNM'2000. 2nd International Workshop on Laser and Fiber-Optical Networks Modeling (Cat. No.00EX419)","volume":"299 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121677823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-05-23DOI: 10.1109/LFNM.2000.854037
A. V. Kats
For nongrazing incidence and only one periodic grating the system contains from one (single resonance) to two (double resonances) equations and may be solved in explicit form. After this one can obtain amplitudes of all non-resonance waves. In this report the general properties of the solution of the diffraction problem for the cases of single and double resonances are analyzed both for relief and impedance gratings. More detailed results for various cases of resonance diffraction are presented here and in other reports.
{"title":"Resonance diffraction theory: new achievements","authors":"A. V. Kats","doi":"10.1109/LFNM.2000.854037","DOIUrl":"https://doi.org/10.1109/LFNM.2000.854037","url":null,"abstract":"For nongrazing incidence and only one periodic grating the system contains from one (single resonance) to two (double resonances) equations and may be solved in explicit form. After this one can obtain amplitudes of all non-resonance waves. In this report the general properties of the solution of the diffraction problem for the cases of single and double resonances are analyzed both for relief and impedance gratings. More detailed results for various cases of resonance diffraction are presented here and in other reports.","PeriodicalId":265943,"journal":{"name":"Proceedings of LFNM'2000. 2nd International Workshop on Laser and Fiber-Optical Networks Modeling (Cat. No.00EX419)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114781879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-05-23DOI: 10.1109/LFNM.2000.854053
V. Yasinskii
For two-frequency lasers, in which radiation contains two waves with orthogonal polarization and has a small frequency difference we are able to realize a heterodyne measurement method which has considerable advantages over a homodyne one. In comparison with two-frequency He-Ne lasers, the two-frequency CO/sub 2/-laser has not yet found wide practical application because of the complexity of its realization.
{"title":"Two-frequency CO/sub 2/-laser with orthogonal elliptic polarizations of modes","authors":"V. Yasinskii","doi":"10.1109/LFNM.2000.854053","DOIUrl":"https://doi.org/10.1109/LFNM.2000.854053","url":null,"abstract":"For two-frequency lasers, in which radiation contains two waves with orthogonal polarization and has a small frequency difference we are able to realize a heterodyne measurement method which has considerable advantages over a homodyne one. In comparison with two-frequency He-Ne lasers, the two-frequency CO/sub 2/-laser has not yet found wide practical application because of the complexity of its realization.","PeriodicalId":265943,"journal":{"name":"Proceedings of LFNM'2000. 2nd International Workshop on Laser and Fiber-Optical Networks Modeling (Cat. No.00EX419)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126943011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-05-23DOI: 10.1109/LFNM.2000.854028
M. Kowakewski, M. Marciniak, A. Sedlin
Results of the numerical simulations of short distance WDM transmission systems (IrDI-intra domain interface) and guidelines for system parameter optimisation in presence of optical nonlinear phenomena (SRS, XPM, FWM) are given.
{"title":"Nonlinear interactions in short-haul DWDM optical fibre telecommunication system","authors":"M. Kowakewski, M. Marciniak, A. Sedlin","doi":"10.1109/LFNM.2000.854028","DOIUrl":"https://doi.org/10.1109/LFNM.2000.854028","url":null,"abstract":"Results of the numerical simulations of short distance WDM transmission systems (IrDI-intra domain interface) and guidelines for system parameter optimisation in presence of optical nonlinear phenomena (SRS, XPM, FWM) are given.","PeriodicalId":265943,"journal":{"name":"Proceedings of LFNM'2000. 2nd International Workshop on Laser and Fiber-Optical Networks Modeling (Cat. No.00EX419)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125472484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-05-23DOI: 10.1109/LFNM.2000.854032
V. Tkachenko, O. Gurin, A. Degtyarev, V. Maslov, V. Svich, A. N. Topkov
The folding resonator of the submillimeter molecular laser contains two circular metal waveguides. Homogeneous flat mirrors are located on one end of the waveguides. The opposite ends of the waveguides are optically connected by the system of the turning mirrors (STM). STM includes one flat and two spherical mirrors. For the purpose of the simplification of the task we shall consider the resonator has symmetry relative to reflection in a plane passing through a normal of a flat mirror of the STM.
{"title":"Mode selection in laser resonators containing waveguide and open sections","authors":"V. Tkachenko, O. Gurin, A. Degtyarev, V. Maslov, V. Svich, A. N. Topkov","doi":"10.1109/LFNM.2000.854032","DOIUrl":"https://doi.org/10.1109/LFNM.2000.854032","url":null,"abstract":"The folding resonator of the submillimeter molecular laser contains two circular metal waveguides. Homogeneous flat mirrors are located on one end of the waveguides. The opposite ends of the waveguides are optically connected by the system of the turning mirrors (STM). STM includes one flat and two spherical mirrors. For the purpose of the simplification of the task we shall consider the resonator has symmetry relative to reflection in a plane passing through a normal of a flat mirror of the STM.","PeriodicalId":265943,"journal":{"name":"Proceedings of LFNM'2000. 2nd International Workshop on Laser and Fiber-Optical Networks Modeling (Cat. No.00EX419)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132346696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-05-23DOI: 10.1109/LFNM.2000.854050
K. Muntean, V. Svich
The theory of modes in open laser resonators, stable as well as unstable both has received much attention for many years, due to the usefulness of these devices. The open resonator eigenmodes may be determined by solving the free-space Maxwell equations with perfect conductor boundary conditions on the mirrors. In the practice usually the Fresnel approximation is made for formulating the problem in the form of the well-known Fresnel-Kirchhoff equation. The solutions to this equation are generally not obtainable analytically. Numerical methods are applicable in the practice only at relatively small Fresnel number. For larger Fresnel number asymptotic methods have been developed which are good in the highly unstable region. However this asymptotic technique fails for marginally unstable resonators. In the stable region the eigenmodes are well described by Gaussian-Hermite solutions, which also become less accurate as the resonator becomes marginally stable. Thus, there is an area between the stable and unstable regions where neither the Gaussian beam theory nor asymptotic solution is valid.
{"title":"Eigenmodes diffraction losses of marginally unstable semispherical resonator","authors":"K. Muntean, V. Svich","doi":"10.1109/LFNM.2000.854050","DOIUrl":"https://doi.org/10.1109/LFNM.2000.854050","url":null,"abstract":"The theory of modes in open laser resonators, stable as well as unstable both has received much attention for many years, due to the usefulness of these devices. The open resonator eigenmodes may be determined by solving the free-space Maxwell equations with perfect conductor boundary conditions on the mirrors. In the practice usually the Fresnel approximation is made for formulating the problem in the form of the well-known Fresnel-Kirchhoff equation. The solutions to this equation are generally not obtainable analytically. Numerical methods are applicable in the practice only at relatively small Fresnel number. For larger Fresnel number asymptotic methods have been developed which are good in the highly unstable region. However this asymptotic technique fails for marginally unstable resonators. In the stable region the eigenmodes are well described by Gaussian-Hermite solutions, which also become less accurate as the resonator becomes marginally stable. Thus, there is an area between the stable and unstable regions where neither the Gaussian beam theory nor asymptotic solution is valid.","PeriodicalId":265943,"journal":{"name":"Proceedings of LFNM'2000. 2nd International Workshop on Laser and Fiber-Optical Networks Modeling (Cat. No.00EX419)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129041652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-05-23DOI: 10.1109/LFNM.2000.854027
I. Nefedov, Y. Morozov, V. Gusyatnikov, A. Zheltikov
Recently a mechanism of the light-by-light control was based on changing the refractive index of the narrow-band layers in semiconductor photonic band gap structures (PBGS). This changing is caused by the contribution of the nonequilibrium charge carriers generated by the controlling radiation. It was shown that this mechanism can be efficient if an optimal controlling light wavelength is taken near the proper absorption edge of the narrow-band semiconductor layers, since the little changes of the layers refractive indices at the band gap edge of the PBGS cause essential change of the transmission characteristics. In this paper non-stationary processes have been considered. The dynamics of the formation of the controlled light pulses in accordance with power of the controlling light, lifetime of the carriers and periods of the structure is studied.
{"title":"Pulse transmission through controllable semiconductor photonic band gap structure","authors":"I. Nefedov, Y. Morozov, V. Gusyatnikov, A. Zheltikov","doi":"10.1109/LFNM.2000.854027","DOIUrl":"https://doi.org/10.1109/LFNM.2000.854027","url":null,"abstract":"Recently a mechanism of the light-by-light control was based on changing the refractive index of the narrow-band layers in semiconductor photonic band gap structures (PBGS). This changing is caused by the contribution of the nonequilibrium charge carriers generated by the controlling radiation. It was shown that this mechanism can be efficient if an optimal controlling light wavelength is taken near the proper absorption edge of the narrow-band semiconductor layers, since the little changes of the layers refractive indices at the band gap edge of the PBGS cause essential change of the transmission characteristics. In this paper non-stationary processes have been considered. The dynamics of the formation of the controlled light pulses in accordance with power of the controlling light, lifetime of the carriers and periods of the structure is studied.","PeriodicalId":265943,"journal":{"name":"Proceedings of LFNM'2000. 2nd International Workshop on Laser and Fiber-Optical Networks Modeling (Cat. No.00EX419)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123405471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-05-23DOI: 10.1109/LFNM.2000.854059
N.A. Balakhonova
Scattering of waves at periodically modulated high reflecting surfaces possess pecularities if the diffraction spectra is close to grazing propagation. In this report new results concerning total suppression of specular reflection (TSSR) effect are presented. Let us suppose that a plane p-polarized wave falls at the impedance grating of arbitrary form in the simplest geometry, i.e. the grating grooves are perpendicular to the plane of incidence. The performance of the corresponding electrodynamical problem, designations and details of the calculation method are briefly discussed.
{"title":"Suppression of specular reflection caused by resonance diffraction at impedance gratings of arbitrary form","authors":"N.A. Balakhonova","doi":"10.1109/LFNM.2000.854059","DOIUrl":"https://doi.org/10.1109/LFNM.2000.854059","url":null,"abstract":"Scattering of waves at periodically modulated high reflecting surfaces possess pecularities if the diffraction spectra is close to grazing propagation. In this report new results concerning total suppression of specular reflection (TSSR) effect are presented. Let us suppose that a plane p-polarized wave falls at the impedance grating of arbitrary form in the simplest geometry, i.e. the grating grooves are perpendicular to the plane of incidence. The performance of the corresponding electrodynamical problem, designations and details of the calculation method are briefly discussed.","PeriodicalId":265943,"journal":{"name":"Proceedings of LFNM'2000. 2nd International Workshop on Laser and Fiber-Optical Networks Modeling (Cat. No.00EX419)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123997550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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